Updated: May 30, 2026
Location and Projects
Address
Hagerstown, MD, 21742
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Sean Thomas Merson HVAC/Mechanical Contractor
Sean Thomas Merson, Hagerstown, MD holds a Heating, Ventilation, Air Conditioning And Refrigeration license according to the Maryland license board.
Their BuildZoom score of 92 ranks in the top 32% of 58,058 Maryland licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Sean Thomas Merson, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Sean Thomas Merson Contact Information
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Change split from 8 ton to 16 ton adding (3) vav's and replacing and adding duct work 30, 700 sq. ft. interior renovations for citigroup hub business center
Valuation:
N/A
Permit #:
2019-03792
Status:
complete
Fee:
$220
Permit Type:
N/A
Building Type:
N/A
Installation of 2 head ductless split and 1 additional head on existing unit relocation of existing duct for construct 217 sq ft one story addition on concrete slab to be used as restrooms and remodel 930 sq ft of existing building to be used as restrooms offices and break room frame construction rafter roof hagerstown regional airport hangar 16
Valuation:
N/A
Permit #:
2016-04548
Status:
complete
Fee:
$380
Permit Type:
N/A
Building Type:
N/A
Changing 2 ton heat pump and ductwork for misc old system btu's out: 24, 000 new system btus out:24, 000 for interior renovations to include 800 sq ft basement finishing to be used as bedroom with full bathroom and laundry room removal of first floor wall between kitchen and dining room and removal of entrance closet removal portions of walls near right side door to create 48 inch doo... see more
Valuation:
N/A
Permit #:
2016-05415
Status:
complete
Fee:
$120
Permit Type:
N/A
Building Type:
N/A
Replacement of vandalized outdoor condensing unit in partial line set 2.5 ton outdoor unit heat pump
Valuation:
N/A
Permit #:
2016-02000
Status:
approved
Fee:
$115
Permit Type:
N/A
Building Type:
N/A
Replacement of air conditioning condensing unit and air handler 2ton
Valuation:
N/A
Permit #:
2016-02001
Status:
approved
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
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Verified License
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Sean Thomas Merson License info
Verified License
| License # | 65192 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Sean Thomas Merson at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.